将字符串中的第一个字符大写

我想将我的字符串格式化为大写字符格式(即Capitalize First Char Of Words).

For Example - 
              If Input is: "NEW YORK CITY"
              then the desired output is: "New York City"

*我的字符串最多3个字.

之后,谷歌搜索它我找到了几种方法来实现这种方法,但我无法得到哪种方法最好.

方法1:

string City = "NEW YORK CITY";
City = City.ToLower();
string Capatilize_City = "";
Capatilize_City = System.Globalization.CultureInfo.CurrentCulture.TextInfo.ToTitleCase(City);

演示:第一种方法的Ideone

方法2:

string City = "NEW YORK CITY";
string[] lstWord = City.ToLower().Split(' ');
string Capatilize_City = "";
foreach (string s in lstWord)
{
  string z = s.Substring(0, 1).ToUpper() + s.Substring(1, s.Length - 1);
  Capatilize_City += " " + z;
}
Capatilize_City = Capatilize_City.Trim();

演示:第二种方法的Ideone

哪种代码最适合使用(性能和速度副)？

您应该考虑代码大小,可读性,可理解性,可维护性,因此明确的赢家是......

所以我建议

Capatilize_City =
  System.Globalization.CultureInfo.CurrentCulture.TextInfo
      .ToTitleCase(City.ToLower());